function btnOn(elt) {
	elt.filters[1].duration=0.2;
	elt.filters[1].apply();
	elt.style.background = "gold";
	elt.filters[1].play();
	elt.filters[0].duration=0.3;
	elt.filters[0].MaxSquare=10;
	elt.filters[0].apply();
	elt.style.background = "navy";
	elt.style.color = "white";
	elt.filters[0].play();
}

function btnOff(elt) {
	elt.filters[1].duration=0.5;
	elt.filters[0].duration=0.5;
	elt.filters[0].MaxSquare=10;
	elt.filters[1].apply();
	elt.filters[0].apply();
	elt.style.background = "white";
	elt.style.color = "navy";
	elt.filters[0].play();
	elt.filters[1].play();
}